[SOLVED] Please explain now - Pricing issues

Why is it cheaper for me to Repurchase ZA Firewall Pro than it is to simply renew my existing subscription?

New purchase = $30
Reneal = $34

Please please do explain this discrepancy. I discovered this quite by accident, a missclick during the renewal process.

I really don't want to think that Checkpoint could be deliberately scamming it's loyal customers seeking to renew. I really want to believe this is just some silly case of a script pulling the wrong numbers.